Movement disorders are among the most dynamic subspecialties in neurology. Accurate identification and characterization of involuntary movements, combined with a detailed patient history, require systematic clinical reasoning. This updated Guide to Diagnosis and Treatment in Movement Disorders provides step-by-step approaches, covering both hyperkinetic and akinetic patterns, and is authored by experienced specialists. Prepared in collaboration with the Turkish Parkinson’s Disease Society, it is an essential resource for colleagues learning, practicing, or advancing their expertise in movement disorders.